package net.xi.news.controller.admin;


import com.sun.org.apache.xpath.internal.operations.Mod;
import net.xi.news.pojo.Type;
import net.xi.news.service.TypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;

@Controller
@RequestMapping("/admin")
public class TypeController {

    @Autowired
    private TypeService typeService;

    @GetMapping("/types")
    //跳转到分类管理页
    public String types(@PageableDefault(size = 5,
            sort = {"id"},
            direction = Sort.Direction.DESC)
            Pageable pageable,
                        Model model){
        model.addAttribute("page",typeService.listType(pageable));
        return "admin/types";
    }

    @GetMapping("/types/input")
    //跳转到分类添加页
    public String input(Model model){
        model.addAttribute("type",new Type());
        model.addAttribute("msg","分类添加");
        return "admin/typesinput";

    }


    @GetMapping("/types/{id}/input")
    //跳转到分类修改页
    public String editInput(@PathVariable Long id, Model model){
        model.addAttribute("type",typeService.getType(id));
        model.addAttribute("msg","分类修改");
        return "admin/typesinput";
    }



    @PostMapping("/types")
    //提交分类添加
    public String post(@Valid Type type,BindingResult result, RedirectAttributes attributes){
       Type t1 = typeService.getTypeByName(type.getName());
       if (t1 != null){
           result.rejectValue("name","nameError","不能重复添加分类!");
       }


        if (result.hasErrors()){
           return "admin/typesinput";
       }

        Type t2 =  typeService.saveType(type);
        if (t2 == null){
            attributes.addFlashAttribute("msg","添加失败！");
        } else {
            attributes.addFlashAttribute("msg","添加成功！");
        }
        return "redirect:/admin/types";
    }


    @PostMapping("/types/{id}")
    //提交分类修改
    public String editpost(@Valid Type type,BindingResult result,
                           @PathVariable Long id, RedirectAttributes attributes){
        Type t1 = typeService.getTypeByName(type.getName());
        if (t1 != null){
            result.rejectValue("name","nameError","你还没有修改!");
        }


        if (result.hasErrors()){
            return "admin/typesinput";
        }

        Type t2 =  typeService.updateType(id,type);
        if (t2 == null){
            attributes.addFlashAttribute("msg","更改失败！");
        } else {
            attributes.addFlashAttribute("msg","更改成功！");
        }
        return "redirect:/admin/types";
    }

    @GetMapping("/types/{id}/delete")
    //删除分类
    public String delete(@PathVariable Long id,RedirectAttributes attributes){

        typeService.deleteType(id);
        attributes.addFlashAttribute("msg","删除成功！");
        return "redirect:/admin/types";
    }
}
